Sounds coming from the shell

Exploration Stage: Palace of Justice
From: Angelique
Description: The dog mask may have been a weak clue, but it did help me find another clue. As I bent down to pick up the mask, something glowed in the fog. It is a snail-like device. It is in evidence, so look for it.
Completed: Upon examination of the metal snail, I discovered that this was used to preserve audio. The device is inscribed "A.K.". It has been tossed and damaged, but the audio is still present. Please listen to it.